73258986
Apr 21, 1980
Apr 20, 1982
Radio Telecommunication Systems Whose Major Components Are Transmitters, Receivers, and Transceivers for Voice, Video and Data; Military Command and Control Systems Whose Major Component Is a Central Computer for Gathering Data from, and Presenting Data to, Remote Terminals; Airborne and Marine Omega Radio Navigation Systems Whose Major Components Are Receivers, Signal Processors and Read-Out Equipment
Electrical and Scientific Apparatus